1. To rub one's sweaty/unshowered vagina onto someone's doorknob.
2. Often used for revenge.
3. A Portmandeau based on "swunt" (sweaty + cunt) and "doorknob"
"I am totally going to swuntknob my asshole nextdoor neighbor before I move."
"my hand smells like hot garbage and french's mustard. I think I got swuntknobbed."